CN103730909A - Communication base station solar energy direct-current grid-connection power generation DC-DC special control device and method - Google Patents
Communication base station solar energy direct-current grid-connection power generation DC-DC special control device and method Download PDFInfo
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Abstract
本发明涉及一种通讯基站太阳能直流并网发电DC-DC专用控制设备及方法。包含防雷系统、控制系统、检测系统，在光伏电源输入端串联防雷系统，所述的控制系统包括供电系统控制开关和防通信电源供电逆流系统，检测系统包括光伏供电检测与控制系统，光伏供电检测与控制系统包括DC/DC控制电源、通信电压采集、光伏电压采集、电压比较电路，将采集到的通信电源电压、光伏电压、通信电源的最高电压门限值进行比较，输出控制信号控制直流供电继电器的开关，进而控制。有益效果是：解决了通信基站太阳能直流并网供电的问题，使得太阳能发电可以直流并网，可以节约基站的市电用电量，达到利用新能源、节能减排的目的，另外还可以节约基站的日常运行成本。
The invention relates to a communication base station solar direct current grid-connected power generation DC-DC special control equipment and method. It includes a lightning protection system, a control system, and a detection system. The lightning protection system is connected in series at the input end of the photovoltaic power supply. The control system includes a power supply system control switch and an anti-communication power supply reverse flow system. The detection system includes a photovoltaic power supply detection and control system. The power supply detection and control system includes DC/DC control power supply, communication voltage acquisition, photovoltaic voltage acquisition, and voltage comparison circuit, which compares the collected communication power supply voltage, photovoltaic voltage, and the highest voltage threshold of communication power supply, and outputs control signal control The switch of the DC power supply relay is further controlled. The beneficial effects are: solve the problem of solar DC grid-connected power supply for communication base stations, enable solar power generation to be DC-connected to the grid, save the mains power consumption of the base station, achieve the purpose of utilizing new energy, saving energy and reducing emissions, and can also save the power of the base station daily operating costs.
Description
技术领域 technical field
本发明涉及一种通讯基站供电控制设备及方法，特别涉及一种通讯基站太阳能直流并网发电DC-DC专用控制设备及方法。 The invention relates to a communication base station power supply control device and method, in particular to a communication base station solar DC grid-connected power generation DC-DC special control device and method. the
背景技术 Background technique
在通信系统中，通信行业的供电系统绝大部分采用交流电转直流电的逆变供电系统，通信设备所用电源电压普遍限制在60v-40v范围内的直流电。 In the communication system, most of the power supply system in the communication industry adopts the AC-to-DC inverter power supply system, and the power supply voltage used by communication equipment is generally limited to DC within the range of 60v-40v. the
目前通信基站太阳能供电方式分为三种，第一种交流并网型光伏系统；第二种离网型光伏系统 ；第三种与市电相结合的太阳能供电系统。 At present, there are three types of solar power supply methods for communication base stations, the first is AC grid-connected photovoltaic system; the second is off-grid photovoltaic system; the third is solar power supply system combined with mains power. the
太阳能离网系统是利用蓄电池进行储能的与电网脱离的太阳能发电系统，主要控制设备为太阳能离网控制器，是将太阳能电力转换为蓄电池充电的主要设备。该设备只能离网运行，不能并网发电。 The solar off-grid system is a solar power generation system that uses batteries for energy storage and is separated from the grid. The main control device is the solar off-grid controller, which is the main equipment that converts solar power into battery charging. The equipment can only run off-grid and cannot be connected to the grid for power generation. the
其中，太阳能并网系统是太阳能所发出的直流电直接经逆变器逆变并入当地电网的太阳能发电系统，主要控制设备是太阳能并网逆变器，该设备只能并网运行，不能离网运行。 Among them, the solar grid-connected system is a solar power generation system in which the direct current generated by solar energy is directly converted into the local power grid through an inverter. The main control device is a solar grid-connected inverter, which can only be connected to the grid and cannot be off-grid. run. the
与市电相结合的太阳能系统有两种工作模式，其一市电优先模式，负载优先使用市电，市电停电的时候使用太阳能电力，太阳能电力为市电补充；其二太阳能电力优先模式，负载优先使用太阳能所发电力，当太阳能电力不足或太阳能不发电时使用市电，切换频繁，系统造价较贵，市电为太阳能电力的补充。主要控制设备为市电互补控制器，太阳能为离网运行状态，在无市电或不用市电时太阳能工作，需要较大容量的储能系统。 The solar energy system combined with the mains power has two working modes, one is the mains power priority mode, the load uses the mains power first, and the solar power is used when the mains power is cut off, and the solar power is supplemented by the mains power; the other is the solar power priority mode, The load is given priority to use the power generated by solar energy. When the solar power is insufficient or the solar power does not generate electricity, the mains power is used. The switching is frequent and the system is more expensive. The mains power is a supplement to the solar power. The main control equipment is the mains complementary controller, and the solar energy is in the off-grid operation state. When there is no mains power or no mains power, the solar energy works, and a large-capacity energy storage system is required.
另外，原太阳能通信基站供电系统的控制设备或为并网逆变器或为离网控制器，其只能工作在一种工作状态，有市电时或无市电时。以上方式太阳能能源利用受限制较多，能源利用效率较低、浪费多。 In addition, the control equipment of the original solar communication base station power supply system is either a grid-connected inverter or an off-grid controller, which can only work in one working state, when there is mains power or when there is no mains power. The utilization of solar energy in the above methods is more restricted, the efficiency of energy utilization is low, and there is much waste. the
发明内容 Contents of the invention
本发明的目的就是针对现有技术存在的上述缺陷，提供一种通讯基站太阳能直流并网发电DC-DC专用控制设备及方法。 The object of the present invention is to provide a special DC-DC control device and method for communication base station solar direct current grid-connected power generation DC-DC for the above-mentioned defects existing in the prior art. the
一种通讯基站太阳能直流并网发电DC-DC专用控制设备，包含防雷系统、控制系统、检测系统，在光伏电源输入端串联防雷系统， A communication base station solar direct current grid-connected power generation DC-DC special control equipment, including a lightning protection system, a control system, a detection system, and a lightning protection system connected in series at the input end of the photovoltaic power supply,
所述的控制系统包括供电系统控制开关和防通信电源供电逆流系统，供电系统控制开关采用直流供电继电器，直流供电继电器的输入端连接到检测系统的输出端，直流供电继电器的输出端连接防逆流器，防逆流器采用单向二极管，将单向二极管串接入供电电路；防逆流器的输出端连接光伏电源输出端； The control system includes a power supply system control switch and a communication power supply backflow prevention system. The power supply system control switch adopts a DC power supply relay, the input end of the DC power supply relay is connected to the output end of the detection system, and the output end of the DC power supply relay is connected to the anti-backflow prevention system. The anti-reflux device uses a unidirectional diode, and the unidirectional diode is connected to the power supply circuit in series; the output end of the anti-reflux device is connected to the output end of the photovoltaic power supply;
所述的检测系统包括光伏供电检测与控制系统，光伏供电检测与控制系统包括DC/DC控制电源、通信电压采集、光伏电压采集、电压比较电路，将采集到的通信电源电压、光伏电压、通信电源的最高电压门限值进行比较，输出控制信号控制直流供电继电器的开关，进而控制。 The detection system includes a photovoltaic power supply detection and control system. The photovoltaic power supply detection and control system includes a DC/DC control power supply, communication voltage acquisition, photovoltaic voltage acquisition, and a voltage comparison circuit. The collected communication power supply voltage, photovoltaic voltage, and communication The highest voltage threshold value of the power supply is compared, and the output control signal controls the switch of the DC power supply relay, and then controls.
上述的检测系统的输出端并联信号反相器的输入端，信号反相器的输出端连接放静电继电器和放静电电路。 The output end of the above detection system is connected in parallel with the input end of the signal inverter, and the output end of the signal inverter is connected with the static discharge relay and the static discharge circuit. the
一种本发明提到的通讯基站太阳能直流并网发电DC-DC专用控制方法，包括以下步骤： A communication base station solar direct current grid-connected power generation DC-DC dedicated control method mentioned in the present invention comprises the following steps:
（1）光伏太阳能供电组件的供电线路的正负两极串接至防雷系统的正负两端，防雷系统内部引线接入供电系统的控制开关直流供电继电器； (1) The positive and negative poles of the power supply line of the photovoltaic solar power supply module are connected in series to the positive and negative ends of the lightning protection system, and the internal leads of the lightning protection system are connected to the control switch DC power supply relay of the power supply system;
（2）将采集到的通信电源电压、光伏电压、通信电源的最高电压门限值通过电压比价器进行比较，当满足光伏电压大于通信电压，通信电源电压小于通信电源门限值参考电压条件时，输出高电压控制信号，否则输出低电压控制信号； (2) Compare the collected communication power supply voltage, photovoltaic voltage, and the highest voltage threshold value of the communication power supply through the voltage comparator. When the photovoltaic voltage is greater than the communication voltage and the communication power supply voltage is lower than the communication power threshold reference voltage condition , output a high voltage control signal, otherwise output a low voltage control signal;
最高电压的设定：以通信电源储能设备（蓄电池）浮充电压的最高门限电压为基准，将最高门限电压的上浮1%后，设定为参考电压； Setting of the highest voltage: Based on the highest threshold voltage of the floating charging voltage of the energy storage equipment (battery) of the communication power supply, the maximum threshold voltage is raised by 1%, and then set as the reference voltage;
（3）当电压比较器输出的信号为高电压，大于5v时，该控制信号启动直流供电继电器，光伏电源开始供电；当该信号为低电压小于5v时，该控制信号关闭直流供电继电器，光伏电源关闭供电； (3) When the signal output by the voltage comparator is high voltage, greater than 5v, the control signal starts the DC power supply relay, and the photovoltaic power supply starts to supply power; when the signal is low voltage and less than 5v, the control signal turns off the DC power supply relay, and the photovoltaic power supply Power off the power supply;
（4）电压比较器输出的信号经信号反相器转换后，生成放电电路继电器控制信号，用于控制放电电路；当电压比较器输出信号为高电压时，该信号为低电压，关闭放电电路继电器，减少光伏电能损耗；当电压比较器输出信号为低电压时，该信号为高电压，开启放电电路继电器，降低光伏电源侧因开路造成的开路电压过高问题； (4) After the signal output by the voltage comparator is converted by the signal inverter, the discharge circuit relay control signal is generated to control the discharge circuit; when the output signal of the voltage comparator is high voltage, the signal is low voltage, and the discharge circuit is closed Relay to reduce photovoltaic power loss; when the output signal of the voltage comparator is low voltage, the signal is high voltage, and the discharge circuit relay is turned on to reduce the problem of excessive open circuit voltage caused by open circuit on the photovoltaic power supply side;
上述的步骤（3）中直流供电继电器的输出端连接防逆流器，防逆流器采用单向二极管，将单向二极管串接入供电电路；防逆流器的输出端连接光伏电源输出端。 In the above step (3), the output end of the DC power supply relay is connected to the anti-reflux device. The anti-reflux device uses a unidirectional diode, and the unidirectional diode is connected in series to the power supply circuit; the output end of the anti-reflux device is connected to the output end of the photovoltaic power supply.
本发明的有益效果是：解决了通信基站太阳能直流并网供电的问题，使得太阳能发电可以直流并网，可以节约基站的市电用电量，达到利用新能源、节能减排的目的，另外还可以节约基站的日常运行成本。 The beneficial effects of the present invention are: solving the problem of solar DC grid-connected power supply for communication base stations, enabling solar power generation to be DC-connected to the grid, saving the mains power consumption of the base station, and achieving the purpose of utilizing new energy, saving energy and reducing emissions. The daily operation cost of the base station can be saved. the
附图说明 Description of drawings
附图1是本发明的原理图； Accompanying drawing 1 is schematic diagram of the present invention;
附图2是本发明的电路连接框图。 Accompanying drawing 2 is the circuit connection block diagram of the present invention.
具体实施方式 Detailed ways
结合附图，对本发明作进一步的描述： In conjunction with the accompanying drawings, the present invention will be further described:
一种通讯基站太阳能直流并网发电DC-DC专用控制设备，包含防雷系统、控制系统、检测系统，在光伏电源输入端串联防雷系统， A communication base station solar direct current grid-connected power generation DC-DC special control equipment, including a lightning protection system, a control system, a detection system, and a lightning protection system connected in series at the input end of the photovoltaic power supply,
所述的控制系统包括供电系统控制开关和防通信电源供电逆流系统，供电系统控制开关采用直流供电继电器，直流供电继电器的输入端连接到检测系统的输出端，直流供电继电器的输出端连接防逆流器，防逆流器采用单向二极管，将单向二极管串接入供电电路；防逆流器的输出端连接光伏电源输出端； The control system includes a power supply system control switch and a communication power supply backflow prevention system. The power supply system control switch adopts a DC power supply relay, the input end of the DC power supply relay is connected to the output end of the detection system, and the output end of the DC power supply relay is connected to the anti-backflow prevention system. The anti-reflux device uses a unidirectional diode, and the unidirectional diode is connected to the power supply circuit in series; the output end of the anti-reflux device is connected to the output end of the photovoltaic power supply;
所述的检测系统包括光伏供电检测与控制系统，光伏供电检测与控制系统包括DC/DC控制电源、通信电压采集、光伏电压采集、电压比较电路，将采集到的通信电源电压、光伏电压、通信电源的最高电压门限值进行比较，输出控制信号控制直流供电继电器的开关，进而控制。 The detection system includes a photovoltaic power supply detection and control system. The photovoltaic power supply detection and control system includes a DC/DC control power supply, communication voltage acquisition, photovoltaic voltage acquisition, and a voltage comparison circuit. The collected communication power supply voltage, photovoltaic voltage, and communication The highest voltage threshold value of the power supply is compared, and the output control signal controls the switch of the DC power supply relay, and then controls.
上述的检测系统的输出端并联信号反相器的输入端，信号反相器的输出端连接放静电继电器和放静电电路。 The output end of the above detection system is connected in parallel with the input end of the signal inverter, and the output end of the signal inverter is connected with the static discharge relay and the static discharge circuit. the
一种本发明提到的通讯基站太阳能直流并网发电DC-DC专用控制方法，包括以下步骤： A communication base station solar direct current grid-connected power generation DC-DC dedicated control method mentioned in the present invention comprises the following steps:
（1）光伏太阳能供电组件的供电线路的正负两极串接至防雷系统的正负两端，防雷系统内部引线接入供电系统的控制开关直流供电继电器； (1) The positive and negative poles of the power supply line of the photovoltaic solar power supply module are connected in series to the positive and negative ends of the lightning protection system, and the internal leads of the lightning protection system are connected to the control switch DC power supply relay of the power supply system;
（2）将采集到的通信电源电压、光伏电压、通信电源的最高电压门限值通过电压比价器进行比较，当满足光伏电压大于通信电压，通信电源电压小于通信电源门限值参考电压条件时，输出高电压控制信号，否则输出低电压控制信号； (2) Compare the collected communication power supply voltage, photovoltaic voltage, and the highest voltage threshold value of the communication power supply through the voltage comparator. When the photovoltaic voltage is greater than the communication voltage and the communication power supply voltage is lower than the communication power threshold reference voltage condition , output a high voltage control signal, otherwise output a low voltage control signal;
最高电压的设定：以通信电源储能设备（蓄电池）浮充电压的最高门限电压为基准，将最高门限电压的上浮1%后，设定为参考电压； Setting of the highest voltage: Based on the highest threshold voltage of the floating charging voltage of the energy storage equipment (battery) of the communication power supply, the maximum threshold voltage is raised by 1%, and then set as the reference voltage;
（3）当电压比较器输出的信号为高电压，大于5v时，该控制信号启动直流供电继电器，光伏电源开始供电；当该信号为低电压小于5v时，该控制信号关闭直流供电继电器，光伏电源关闭供电； (3) When the signal output by the voltage comparator is high voltage, greater than 5v, the control signal starts the DC power supply relay, and the photovoltaic power supply starts to supply power; when the signal is low voltage and less than 5v, the control signal turns off the DC power supply relay, and the photovoltaic power supply Power off the power supply;
（4）电压比较器输出的信号经信号反相器转换后，生成放电电路继电器控制信号，用于控制放电电路；当电压比较器输出信号为高电压时，该信号为低电压，关闭放电电路继电器，减少光伏电能损耗；当电压比较器输出信号为低电压时，该信号为高电压，开启放电电路继电器，降低光伏电源侧因开路造成的开路电压过高问题； (4) After the signal output by the voltage comparator is converted by the signal inverter, the discharge circuit relay control signal is generated to control the discharge circuit; when the output signal of the voltage comparator is high voltage, the signal is low voltage, and the discharge circuit is closed Relay to reduce photovoltaic power loss; when the output signal of the voltage comparator is low voltage, the signal is high voltage, and the discharge circuit relay is turned on to reduce the problem of excessive open circuit voltage caused by open circuit on the photovoltaic power supply side;
上述的步骤（3）中直流供电继电器的输出端连接防逆流器，防逆流器采用单向二极管，将单向二极管串接入供电电路；防逆流器的输出端连接光伏电源输出端。 In the above step (3), the output end of the DC power supply relay is connected to the anti-reflux device. The anti-reflux device uses a unidirectional diode, and the unidirectional diode is connected in series to the power supply circuit; the output end of the anti-reflux device is connected to the output end of the photovoltaic power supply.
本发明的要求与解释如下： Requirements and explanations of the present invention are as follows:
a、 光伏太阳能供电组件的组合要求，由于通信供电系统对-48V直流电源的电压范围要求为-40V~-57V，所以光伏太阳能电池组件所组成的串联系统的负载电压参数要求为<70V。 a. Combination requirements of photovoltaic solar power supply components. Since the voltage range of -48V DC power supply required by the communication power supply system is -40V~-57V, the load voltage parameter of the series system composed of photovoltaic solar cell components is required to be <70V.
b、光伏太阳能供电组件串联系统露天设置，在阴雨天极易受到雷电影响，为保证通信设备安全，本发明在光伏太阳能供电转换系统增添了防雷保护功能，该部分功能能够很好的对太阳能电池组件的因遭受雷击而引入到通信供电系统的过载电流、过载电压进行隔离和阻断。 b. The series system of photovoltaic solar power supply components is set in the open air, which is easily affected by lightning in cloudy and rainy days. In order to ensure the safety of communication equipment, the present invention adds a lightning protection function to the photovoltaic solar power supply conversion system. This part of the function can be very good for solar cells. The components are isolated and blocked from the overload current and overload voltage introduced into the communication power supply system due to lightning strikes. the
c、 为有效检测光伏太阳能供电组件的供电条件是否满足通信系统电源需求，该方法设计了光伏太阳能供电组件的供电检测功能，该供电检测功能即能检测光伏组件的供电条件是否满足要求，又能消减因光伏组件供电系统开路而在光伏组件电源正负两极形成的瞬间的开路高电压。当光伏组件进行供电时，该系统能检测光伏组件的供电条件是否满足持续供电要求，检测异常时，切断光伏组件与通信电源之间的连接；同时在确保满足通信供电条件时，开通供电开关。 c. In order to effectively detect whether the power supply conditions of photovoltaic solar power supply components meet the power requirements of the communication system, this method designs the power supply detection function of photovoltaic solar power supply components. This power supply detection function can detect whether the power supply conditions of photovoltaic components meet the requirements, and can Reduce the instantaneous open-circuit high voltage formed at the positive and negative poles of the photovoltaic module power supply due to the open circuit of the photovoltaic module power supply system. When the photovoltaic module is supplying power, the system can detect whether the power supply condition of the photovoltaic module meets the requirement of continuous power supply. When abnormality is detected, the connection between the photovoltaic module and the communication power supply is cut off; at the same time, when the communication power supply condition is met, the power supply switch is turned on. the
d、在光伏太阳能供电组件不具备供电的条件下，为防止室内通信供电系统的电力反馈至光伏太阳能供电组件系统中，该方法设计了防通信电源逆流光伏太阳能供电组件的功能，该功能能够有效防止电流反馈至光伏太阳能供电组件系统。 d. Under the condition that the photovoltaic solar power supply components do not have power supply, in order to prevent the power of the indoor communication power supply system from feeding back into the photovoltaic solar power supply component system, this method designs the function of preventing communication power backflow photovoltaic solar power supply components, which can effectively Prevent current feedback to the photovoltaic solar power module system. the
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